Coupling



15, I E DEYIERLEIN COUPLING Filed Oct. 3, 1927 w i. I J 2 simple of construction, easy to assemble, and

i Patented Apr. "15, 1930 fi*,:15-5,iee

EDWARD EIERLEIN, or ronrf CHESTER, New YORK;

courtrne Application filed October 3,1927. SeriaLNo. 223,773

I This invention relates'toimprovementsin couplings and more particularly to a tank or boiler,coupling.

The primary object of the invention resides p .5 11113116 PIOVlSlOIl ofa COUPllIlg for connecting a pipe tothewall of a boiler or tank wherein accesscannot be hadfrom the interior of the tank when makingthe connection, but which coupling isapplied and anchored to the inner 10 walls thereof and assures a water tight con 15 nipple supported by an anchor plate. of a sue to pass througha hole in'a tank and which engages the inner walls or" the tankand l bridges the hole, to permit a washer to be fitted over the nipple for sealing engagement ple and the tank and which is held by a clamping nut threadedly connectedto the nipple and, adapted to be screwedtightflagainst the wall of the tank and which nipple serves to vide a coupling for'domestic hot water tanks or boilers which consistsof but few parts, is

inexpensive of manufacture.

Withthese and other objects in view, the invention resides in-certain novel construction I and combination and arrangement of parts, 7 the essential features of which are hereinafter fully described, are particularlypointed out n in the appended claim, and are illustrated in the accompanying drawing, in which Figure 1' is aflvertical sect'onal view of my improved coupling in assembled position uponatank. 1

e ,v Figure 2 is an end elevational view looking from the interior'of the tank.

the parts in a separated position. t Figur'e4; is a detailsectionalview showing the manner of inserting thefnipple and anchor plate through the opening in the'tank.

- Referring more particularly to the draw-' with'the outside of the joint between. the nipdraw the parts into tight engagemennfand to L v whichnut, the pipeto be connected is joined 'byasuitableunionr r yAnotherobject of the invention is to proof the contents or" the'tank; I

1 clamping nut, the pipe 20 to be connected with instrument with which the nipple is held Figure 3 is a collective perspective view of 'ing, the reference numeral 10 designates-the 1 "wall ofa hot water tank orbo'iler'which is provided with a hole or'opening 1101 a di- 7 ameter to permit of the free passage of the annular flange 12 provided on one end of'a tapered threaded nipple 13. An anchor plate 14 engages the inner walls of the'tank and r H bridges the opening'll' to support the nipple while the fiang'e' 12 engages-the anchor I plate'to hold'the plate'in'position. V Theanchor'plate is provided with an opening 15 rthrough which the nipple 13 extends to the exterior side of the' tank wan-.5 v 1 A nut 16is threaded to the freeiend of the nipple 13 and is provided with a recess, 17in- 5 its tlatbearing. surface for the receptionof a rubber'or yieldablegasket 18, which gasket I bears against thetexterior 6f thetankwall y when the nut'isscrewed homefuponfthe nipple;

and which nut-isshaped-tofitthe curvature[ of the tank wall. "The nipple serves to'p'ull the anchor plate and nut tight against the vwall of the tank tolprovide ,a tight rigid'con-' *structionp The rubber gasket 18 serves to seal the opening l'lto prevent any leakage 5 For thepurpose of finally tightening the parts after the nut has'been partially screwed home, I provide the inner walls of the nipple with diametricallyopposed spannerlugs 19 0 "by which the-nipple maybe turned by a span-r "ner Wrench. When the coupling has been i q made tight by the screwing home of the the tank 10 is'joined to the nut'16 by a well known form of union 21, the nut being'pro- ,vided with-external threads22 to which the unionisthreaded. v v

In assembling the coupling, the nipple 13-is The anchor plate 1 1 is also supported by'the Figure .45 of the drawing. When plate" has been inserted through the opening,'itis positioned to lie flat against theinner walls. of i lfirst inserted through thehole 11 and issup- 901 I ported from the exterior of the tank by a suitable instrument such as a spanner wrench. a l

I the tank and to bridge the opening, after which the nipple is pulled through the opening 15 in the anchor plate and the clamping nut 16 initially applied by threading the same I partially upon the nipple after which it is moved home by the rotation of the nipple.

While I have described what I deem to be themost desirable embodiment of my invention, it is obvious that many of the details may be varied without in any way departing from the spirit of my invention, and I therefore do not limit myself to the exact details of construction herein set forth nor to' any thing less than the whole of myv invention limited only by the appended claim.

What is claimed as new is a In combination with a closed tank having an opening in the wall thereof,'a nipple ex- Lternally threaded at one end and havinga V 'flan e at its 0 nosite end for insertion in the b PL tank through said opening, a clamping nut threadedly connected to said nipple externally of said tank, said nuthaving a recessed face, a gasket fitting between said face and r p the outer surface of the tank, said nut being externally threaded to receive a union for connecting a pipe with said nipple, and an elongated anchor plate having an aperture therein to accommodate said nipple and retain its fiange within the tank. when said clamping I nut is screwed home, the diameter of said opening being greater than the transverse di-,

mension of said anchor plate to admit the latter to said tank, and the longitudinal dimension of said plate being greater than the diameter of said opening. I

. In testimonywhereof I have atfixed my signature. 7 7 g EDWARD DEIERLEIN. 

